In X-linked recessive inheritance, how much percentage of sons will be affected from disorder for a mutation if the father is affected only?
a) 25
b) 50
c) 75
d) 0
Explanation: because sons receive X from mother (normal) not from affected father
Which of the following X-linked trait/s is/are recessive trait/s?
a) haemophilia A and B
b) colour blindness
c) diabetes insipidus
d) all of these
Which one of the following trait in human is controlled by a recessive gene?
a) skin colour
b) eye colour
c) tongue rolling
d) diabetes
In X-linked dominant inheritance, a male of female child of an affected mother has a…….% chance of inheriting the mutation and thus being affected with the disorder.
a) 25
b) 50
c) 75
d) 100
Explanation: each child whether male or female receive one X from mother which may be mutated or normal
In X-linked dominant inheritance, what percentage of daughter will be affected if father is affected?
a) 25
b) 50
c) 75
d) 100
Explanation: daughter receives one X chromosome from father which results in mutation
In X-linked dominant inheritance, what percentage of sons will be affected if father is affected?
a) 25
b) 50
c) 75
d) 00
Explanation: son receives X chromosome from mother not from father hence is normal
